ID.: 17-16-24-3004-02 | 6.2017
13
3.3 Operating principle
5
6
4
8
3
10
1
2
9
1 Compressor
6 Fan
2 Condenser
8 Temperature sensor for the expansion valve
3 Dehydrator
9 Electric heater
4 Expansion valve
10 Buffer tank for DHW (boiler)
5 Evaporator
The cooling system of the device is a closed circuit system with the heat exchange liquid
R134A. At lower pressure and temperature (i.e. 10 °C) the refrigerant is evaporated in the
evaporator and thus removes heat from the air. Afterwards, the compressor compresses
the refrigerant to a higher pressure, this results in the raising of the refrigerant temperature
to a level higher than the water temperature in the buffer tank for DHW. The refrigerant
then releases the heat in the condenser into the water and condenses as a result. With
the expansion of the refrigerant the pressure and temperature in the refrigerant fall to their
initial level, completing the circular process. This process is repeated throughout the
device’s operation.
Содержание WP2 LF-202B
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